A view of a building on Darkes Lane in Potters Bar, Britain, September 21, 2020. REUTERS/Paul Childs

A view of a building on Darkes Lane in Potters Bar, Britain, September 21, 2020. REUTERS/Paul Childs

A dark and empty classroom at P.S. 59 in the Brooklyn borough of New York City, New York, U.S., September 2, 2020. REUTERS/Carlo Allegri/pool

Juan Meza walks in the dark carrying a plastic bucket filled with chickens for sale in Guigue, Venezuela, August 13, 2020. Picture taken August 13, 2020. REUTERS/Manaure Quintero

U.S. President Donald Trump participates in an executive order signing event on "hiring American" with Vice President Mike Pence and others in the very dark Cabinet Room of the White House, with the lights low and curtains drawn, in Washington, U.S., August 3, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump participates in an executive order signing event on "hiring American" in the very dark Cabinet Room of the White House, with the lights low and curtains drawn, in Washington, U.S., August 3, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump speaks during an executive order signing event on "hiring American" in the very dark Cabinet Room of the White House, with the lights low and curtains drawn, in Washington, U.S., August 3, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump participates in an executive order signing event on "hiring American" in the very dark Cabinet Room of the White House, with the lights low and curtains drawn, in Washington, U.S., August 3, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump participates in an executive order signing event on "hiring American" in the very dark Cabinet Room of the White House, with the lights low and curtains drawn, in Washington, U.S., August 3, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump speaks during an executive order signing event on "hiring American" in the very dark Cabinet Room of the White House, with the lights low and curtains drawn, in Washington, U.S., August 3, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump speaks about protests and police as he attends a meeting with leadership from the National Association of Police Organizations in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump attends a meeting with leadership from the National Association of Police Organizations and speaks about protests and the situation in Portland, Oregon in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump speaks about protests and the situation in Portland, Oregon during a meeting with leadership from the National Association of Police Organizations in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump speaks about racial inequality protests and the situation in Portland, Oregon during a meeting with leadership from the National Association of Police Organizations in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump speaks about racial inequality protests and the situation in Portland, Oregon during a meeting with leadership from the National Association of Police Organizations in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump speaks about racial inequality protests and the situation in Portland, Oregon during a meeting with leadership from the National Association of Police Organizations in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump speaks about racial inequality protests and the situation in Portland, Oregon during a meeting with leadership from the National Association of Police Organizations in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump listens to a member of the leadership team from the National Association of Police Organizations during a meeting with the group where the president discussed recent racial inequality and police violence protests in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump listens to a member of the leadership team from the National Association of Police Organizations during a meeting with the group where the president discussed recent racial inequality and police violence protests in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

A member of the leadership team from the National Association of Police Organizations listens as U.S. Vice President Mike Pence and President Donald Trump hold a meeting with the group in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. Vice President Mike Pence and President Donald Trump hold a meeting with leadership from the National Association of Police Organizations where the president spoke about about racial inequality protests and the situation in Portland, Oregon in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump holds a meeting with leadership from the National Association of Police Organizations where he spoke about about racial inequality protests and the situation in Portland, Oregon in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump speaks about racial inequality protests and the situation in Portland, Oregon during a meeting with leadership from the National Association of Police Organizations in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump speaks about racial inequality protests and the situation in Portland, Oregon during a meeting with leadership from the National Association of Police Organizations in a very dark Cabinet Room with all of the curtains drawn and closed at the White House in Washington, U.S., July 31, 2020. REUTERS/Carlos Barria

Dark clouds are seen over the country sign of Luxembourg on the border crossing of Germany and Luxemburg of Schengen, a little town along the Moselle river known for the EU Schengen Treaty during the spread of the coronavirus disease (COVID-19) in Schengen, Luxembourg, July 15, 2020. The sticker reads "Pro Europe - Open Borders". REUTERS/Wolfgang Rattay

A view of a dark street during a power cut in Beirut, Lebanon July 3, 2020. Picture taken July 3, 2020. REUTERS/Mohamed Azakir

Greenpeace activists hold a banner reading "dark business with the coal industry" in front of the headquarters of the party Christian Democratic Union (CDU) in Berlin, Germany, July 1, 2020. REUTERS/Hannibal Hanschke

Members of the media wait at Meseberg Castle, the federal government's guest house, where German Chancellor Angela Merkel and French President Emmanuel Macron meet in the afternoon, in Meseberg, Germany June 29, 2020. One of the topics will be the European reconstruction plan of 750 billion euros in the coronavirus crisis. Kay Nietfeld/Pool via REUTERS

Dark clouds pass over Meseberg Castle, the federal government's guest house, where German Chancellor Angela Merkel and French President Emmanuel Macron meet in the afternoon, in Meseberg, Germany June 29, 2020. One of the topics will be the European reconstruction plan of 750 billion euros in the coronavirus crisis. Kay Nietfeld/Pool via REUTERS

Horse Racing - Royal Ascot - Ascot Racecourse, Ascot, Britain - June 17, 2020 Trainer Mark Johnston after his horse Dark Vision had won the Royal Hunt Cup, as racing resumed behind closed doors after the outbreak of the coronavirus disease (COVID-19) Edward Whitaker/Pool via REUTERS

Never Dark (left) ridden by David Probert wins the 1:00 Unibet Thanks The Frontline Workers Handicap at Kempton Park Racecourse, as racing resumes behind closed doors following the outbreak of the coronavirus disease (COVID-19), Sunbury-on-Thames, Britain, June 3, 2020. Bill Selwyn/Pool via REUTERS

Times Square billboards display a short video as part of the #DontGoDark campaign staged by a group of companies comprised of chefs, restaurateurs, and other small business owners to communicate a message that the most vulnerable businesses need more support to survive the coronavirus pandemic, during the outbreak of the coronavirus disease (COVID-19) in Manhattan, New York, U.S., May 27, 2020. REUTERS/Caitlin Ochs

People sit in their vehicles while watching Times Square billboards go dark for one minute as part of the #DontGoDark campaign staged by a group of companies comprised of chefs, restaurateurs, and other small business owners to communicate a message that the most vulnerable businesses need more support to survive the coronavirus pandemic, during the outbreak of the coronavirus disease (COVID-19) in Manhattan, New York, U.S., May 27, 2020. REUTERS/Caitlin Ochs

People wait to watch Times Square billboards go dark for one minute as part of the #DontGoDark campaign staged by a group of companies comprised of chefs, restaurateurs, and other small business owners to communicate a message that the most vulnerable businesses need more support to survive the coronavirus pandemic, during the outbreak of the coronavirus disease (COVID-19) in Manhattan, New York, U.S., May 27, 2020. REUTERS/Caitlin Ochs

People watch the red steps go dark as part of the #DontGoDark campaign staged by a group of companies comprised of chefs, restaurateurs, and other small business owners to communicate a message that the most vulnerable businesses need more support to survive the coronavirus pandemic, during the outbreak of the coronavirus disease (COVID-19) in Manhattan, New York, U.S., May 27, 2020. REUTERS/Caitlin Ochs

Times Square billboards display a short video as part of the #DontGoDark campaign, staged by a group of companies comprised of chefs, restaurateurs and other small business owners to communicate a message that the most vulnerable businesses need more support to survive the coronavirus pandemic during the outbreak of the coronavirus disease (COVID-19) in Manhattan, New York, U.S. May 27, 2020. REUTERS/Caitlin Ochs

Times Square billboards go dark for one minute as part of the #DontGoDark campaign staged by a group of companies comprised of chefs, restaurateurs, and other small business owners to communicate a message that the most vulnerable businesses need more support to survive the coronavirus pandemic, during the outbreak of the coronavirus disease (COVID-19) in Manhattan, New York, U.S., May 27, 2020. REUTERS/Caitlin Ochs TPX IMAGES OF THE DAY

Times Square billboards go dark for one minute as part of the #DontGoDark campaign staged by a group of companies comprised of chefs, restaurateurs, and other small business owners to communicate a message that the most vulnerable businesses need more support to survive the coronavirus pandemic, during the outbreak of coronavirus disease (COVID-19) in Manhattan, New York, U.S., May 27, 2020. REUTERS/Caitlin Ochs

May 24, 2020, Concord, NC, USA; Dark clouds fill the sky during the Coca-Cola 600 at Charlotte Motor Speedway. Mandatory Credit: Gerry Broome/Pool Photo via USA TODAY Network

May 24, 2020, Concord, NC, USA; Dark clouds fill the sky over during the Coca-Cola 600 at Charlotte Motor Speedway. Mandatory Credit: Gerry Broome/Pool Photo via USA TODAY Network

May 24, 2020, Concord, NC, USA; Dark clouds fill the sky over during the Coca-Cola 600 at Charlotte Motor Speedway. Mandatory Credit: Gerry Broome/Pool Photo via USA TODAY Network

A demonstrator holds a banner reading "Fear is the path to the dark side" during a protest against the anti-coronavirus measures taken by the Austrian government, as the spread of the coronavirus disease (COVID-19) continues in Vienna, Austria, May 14, 2020. REUTERS/Leonhard Foeger

A demonstrator holds a sign reading "Fear is the path to the dark side" during a protest against the anti-coronavirus measures taken by the Austrian government, as the spread of the coronavirus disease (COVID-19) continues in Vienna, Austria, May 1, 2020. REUTERS/Leonhard Foeger

The White House briefing room is dark and empty after the coronavirus task force did not hold a briefing for the second day in a row in Washington, U.S., April 26, 2020. REUTERS/Erin Scott

The White House briefing room podium is dark and empty after the coronavirus task force did not hold a briefing for the second day in a row in Washington, U.S., April 26, 2020. REUTERS/Erin Scott

The White House briefing room podium is dark and empty after the coronavirus task force did not hold a briefing for the second day in a row in Washington, U.S., April 26, 2020. REUTERS/Erin Scott

The White House briefing room podium is dark and empty after the coronavirus task force did not hold a briefing for the second day in a row in Washington, U.S., April 26, 2020. REUTERS/Erin Scott

Tommy and his sons, Nylow and Ty cycle through the Dark Hedges in Stranocum for their daily exercise, following the outbreak of the coronavirus disease (COVID-19). The avenue of beech trees have been used as a location in the HBO television series Game of Thrones, Stranocum, Northern Ireland, April 26, 2020. REUTERS/Jason Cairnduff

The White House briefing room is dark and empty after the coronavirus task force did not hold a briefing in Washington, U.S., April 25, 2020. REUTERS/Erin Scott

The White House briefing room is dark and empty after the coronavirus task force did not hold a briefing in Washington, U.S., April 25, 2020. REUTERS/Erin Scott

Horse racing - Saudi Cup - King Abdulaziz Racetrack, Riyadh, Saudi Arabia - February 29, 2020 Jockey Frankie Dettori and trainer Allan Smith collect their trophies after Dark Power wins The stc 1351 Cup REUTERS/Ahmed Yosri

Horse racing - Saudi Cup - King Abdulaziz Racetrack, Riyadh, Saudi Arabia - February 29, 2020 Jockey Frankie Dettori and trainer Allan Smith collect their trophies after Dark Power wins The stc 1351 Cup REUTERS/Ahmed Yosri

Horse racing - Saudi Cup - King Abdulaziz Racetrack, Riyadh, Saudi Arabia - February 29, 2020 Frankie Dettori celebrates after winning the The stc 1351 Cup on Dark Power alongside trainer Allan Smith REUTERS/Ahmed Yosri

Horse racing - Saudi Cup - King Abdulaziz Racetrack, Riyadh, Saudi Arabia - February 29, 2020 Frankie Dettori celebrates with a trophy after winning the The stc 1351 Cup on Dark Power REUTERS/Ahmed Yosri

Horse racing - Saudi Cup - King Abdulaziz Racetrack, Riyadh, Saudi Arabia - February 29, 2020 Frankie Dettori wins The stc 1351 Cup on Dark Power REUTERS/Ahmed Yosri

Horse racing - Saudi Cup - King Abdulaziz Racetrack, Riyadh, Saudi Arabia - February 29, 2020 Frankie Dettori wins The stc 1351 Cup on Dark Power REUTERS/Ahmed Yosri

Horse racing - Saudi Cup - King Abdulaziz Racetrack, Riyadh, Saudi Arabia - February 29, 2020 Frankie Dettori wins The stc 1351 Cup on Dark Power REUTERS/Ahmed Yosri

Horse racing - Saudi Cup - King Abdulaziz Racetrack, Riyadh, Saudi Arabia - February 29, 2020 Frankie Dettori celebrates after winning the The stc 1351 Cup on Dark Power REUTERS/Ahmed Yosri TPX IMAGES OF THE DAY